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Overview
Overview
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News
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Posts
Financials
Financials
Forecast
Forecast
Valuation
Valuation
Shareholders
Shareholders
Profile
Profile
All Shareholders
Institutional Holders
Insiders
All Shareholders
Shareholder Type
Private companies
35.31%
Individuals & Insiders
32.15%
Public and others
30.57%
Institutions
1.81%
Public companies
0.16%
Major Shareholders
Latest
Major Shareholders Latest
Shareholder
% Held
Shares Held
Change %
Shares Changed
Report Date
Taiwan Carbon Nano Technology Corporation
35.31%
2.60M
7.95%
-41.00K
05/26/2026
Ting-Chuan Lee
Director
10.96%
807.42K
4.97%
+441.71K
05/26/2026
Chun-Jung Tsai
Director
8.94%
658.20K
3.09%
+301.20K
05/26/2026
Chun-Hsien Tsai
CEO, President & Chairman of the Board
5.57%
410.37K
1.15%
+0
04/15/2026
Chih-Heng Lu
Director of Corporate Developoment
1.66%
122.00K
0.44%
+0
11/25/2025
Wen-Han Chang
Independent Director
1.38%
101.55K
0.37%
+0
11/25/2025
Chung-Yi Tsai
Director
1.23%
90.88K
0.33%
+0
11/25/2025
Pao-Sheng Wei
Independent Director
1.23%
90.88K
0.33%
+0
11/25/2025
Hsin-Liang Lee
Chief Financial Officer
1.02%
75.28K
0.27%
+0
11/25/2025
Geode Capital Management, LLC
0.72%
53.07K
0.61%
+46.35K
03/31/2026
Mariner, LLC
0.42%
30.80K
0.03%
+8.00K
03/31/2026
Keystone Financial Group, LLC
0.20%
14.55K
--
+14.55K
03/31/2026
Vanguard Fiduciary Trust Company
0.19%
14.17K
--
-778.00
03/31/2026
ASE Technology Holding Co., Ltd.
0.16%
11.78K
0.03%
+0
04/15/2026
Yao-Chung Chiang
Independent Director
0.15%
11.28K
1.34%
-80.00K
06/05/2026
Vanguard Capital Management, LLC
0.13%
9.28K
--
+9.28K
03/31/2026
Tower Research Capital Europe Limited
0.06%
4.44K
<0.01%
+1.43K
03/31/2026
BlackRock, Inc.
0.04%
3.07K
0.01%
+0
03/31/2026
Seneschal Advisors, LLC
0.02%
1.80K
<0.01%
+0
03/31/2026
Steward Partners Investment Advisory, LLC
0.02%
1.21K
<0.01%
+0
03/31/2026
